Furuno color video plotter GD1720C - Manual (Page 51)

2. RADAR OPERATION
2-20
2.18.3 Trail gradation
The echo trails can be shown in single or multiple gradations. Multiple gradation paints the
trails thinner with time, like the afterglow on an analog PPI radar.
1. If not displayed, press the HIDE/SHOW soft key to show the radar soft keys.
2. Press the TARGET and TRAIL soft keys.
3. Press the GRAD soft key to select SINGLE or MULTI as appropriate.
4. Press the RETURN soft key twice to finish.
Multitone Monotone
2.18.4 Trail color
Trails may be shown target trails in blue, yellow, green or white.
1. If not displayed, press the HIDE/SHOW key to show the radar soft keys.
2. Press the TARGET, TRAIL and TRAIL COLOR soft keys in that order.
TRAIL COLOR
BLUE
YELLOW
GREEN
WHITE
Trail color window
3. Use the Cursor pad to select the color desired, then press the ENTER soft key.
4. Press the RETURN soft key twice.